The generation regimes in a pulsed Nd:YAG laser with transverse LED pumping and multiloop self-pumped phase-conjugate cavity on the gain gratings are studied. The differential efficiency of laser is 27% in the free-running regime at a pulse energy of up to 1 J and quality parameter M of no...

Reports on a phase conjugate mirror (PCM) using germanium diselenide amorphous thin films. Variation in the size of the PCM area; Temporary or permanent recording of the induced hologram depending on the incident light parameters; Main drawback of the system; Suggestion that the modulation of...

A distributed-feedback laser was demonstrated by using a fluorescent dye-doped polymer. The periodic structure of a one-dimensional photonic crystal was fabricated through spin coating and alternate stacking of high and low refractive-index polymers. The rhodamine-6G-doped multilayer showed a...

n optical scheme and design of a YAG:Nd frequency laser with a two-pass amplifier and a mirror with the phase conjugation by the stimulated Brillouin scattering in an optical fiber is described. The maximal radiation energy is 1000 mJ at a 1.064-Î¼m fundamental wavelength and 500, 200, and 20...

We present an imaging modality capable of providing high-speed optical dispersion measurements of live cells. The technique permits wide-field measurement of the optical phase shifts introduced by a sample for multiple discrete wavelengths in a single image capture. Utilizing spatial modulation...

Thermally induced optical nonlinearity of Mercurochrome dye in methanol solution at four different concentrations and as solid films mixed with polymethylmethacrylate (PMMA) has been carried out using a CW Nd-YAG laser at 532 nm as the source of excitation. The optical response was characterized...

Nd-doped KGd(WO4)2 laser crystals are implanted by either He+ [at energies of (1.9+2.0+2.1) MeV and fluences of (3.24+3.24+5.4)Ã—1015 cm-2] or C3+ ions (at an energy of 6.0 MeV and a dose of 1.0Ã—1015 cm-2). The two implantations induce diverse refractive index modifications for waveguide...

A buried planar Nd:YAG waveguide has been fabricated by 20-MeV N-ion implantation. From Raman and optical characterization, it has been found that the refractive index has a larger increase when the crystal damage is heavier. According to our analysis, this crystal damage is caused by the...